CN103306169B - Floating ballast bed plate end isolation mounting - Google Patents

Abstract

The invention belongs to vibration isolation field, relate to floating ballast bed in for supporting the plate end isolation mounting of floating plate.It comprises top board, base plate, flexible member and damping element, flexible member and damping element are arranged between top board and base plate, feature top board is arranged plate end level to stopping means, and plate end level comprises plate end horizontal limit devices or/and plate end longitudinal limiting device to stopping means.Realization of the present invention and length are that the prefabricated short slab of 1.2 ~ 8m constructs floating ballast bed structure jointly, the production of the prefabricated of floating plate and type hoisting construction is made to become possibility, to achieve longitudinal direction and the cross spacing of prefabricated short slab to stopping means by arranging plate end level, thus ensured floating ballast bed structure stability when driving and safety, substantially increase speed of application, be conducive to the further reduction of erection time, reduce difficulty of construction, save production cost.Isolation mounting of the present invention is practical, safe and reliable, and cost performance is higher, and market application foreground is very wide.

Description

Floating ballast bed plate end isolation mounting

Technical field

The invention belongs to vibration isolation field, relate to the isolation mounting that a kind of railway is floating ballast bed, specifically a kind of floating ballast bed in for supporting the plate end isolation mounting of floating plate.

Background technology

Vibration & noise is influence surface the most a kind of public hazards that people generally acknowledge, is also track traffic in recent years development one of a facing difficult problem urgently to be resolved hurrily.In the noise reduction technology of existing track traffic, practical application is the most successfully component livitation, typically floating ballast bed technology, its vibration isolation efficiency is high, stable work in work, become common recognition in the industry, the such as patent No. is that the Chinese patent of ZL200410035441.1 discloses the floating ballast bed structure of typical internal formula and corresponding isolation mounting.But existing floating ballast bed construction period is general longer, and standard floating plate length is 25m, and the speed of all carrying out the earliest constructing in tunnel can only realize average each working group and complete 5m every day; Then earthing, Shen, Shanghai Inland Steel and Qingdao every and solid company develops precast reinforced cage construction technology jointly, namely after the good reinforcing cage of the first colligation in ground, lifting enters the construction method of carrying out filling concrete in tunnel again, and the job schedule of each working group every day is brought up to about 30m.Because reinforcing cage size is larger, often need when transporting in tunnel to offer special passage on tunnel, very inconvenient, in addition, although reinforcing cage construction method significantly improves construction speed, but still the requirement of engineering construction duration can not be met well, many subway vibration isolation locations yield because the duration cannot meet and use floating ballast bed vibration isolation technique, cause the hidden danger vibrated and disturb residents.Have the efficient construction method of some preformed patterns at present at other field, such as, generally have employed the prefabricate body of a bridge in elevated bridge construction, the technical method of then on-site hoisting construction, significantly improves speed of application.But the floating plate one piece of traditional 25m length weighs more than 70 tons, and in existing tunnel, the supporting capacity of hoisting transportation instrument only has 10 tons, difference is too large, integral prefabricatedly cannot transport; Even if can transport, due to narrow space in tunnel, majority is 3 in Curve Segment, and prefabricated long slab is difficult to adapt to polytropic curve key element, and therefore precast plate technology cannot be applied always in the floating ballast bed engineering construction of this kind of multi-point support of steel spring floating slab.Although there is the feasible scheme long floating plate being changed into short floating plate in theory, but long slab is shortened plate and will be brought the problem of a series of kinetics, safety and installation aspect, such as, apply existing elastic vibration isolation device, after plate length is shortened, floating plate horizontal level and stability requirement cannot be met, in addition, train is too large through out-of-date floating plate deflection, forces acted on rail is excessive, also there will be See-saw effect, safety having a strong impact on driving etc., the technical scheme that therefore long floating plate shortens floating plate fails to apply in engineering all the time.How to improve speed of application further, become a difficult problem in the industry for the floating ballast bed technology further genralrlization application of restriction.

Summary of the invention

The object of the invention is to overcome above-mentioned defect, provide a kind of restraining ability stronger, be suitable for utilizing prefabricated short slab jointly to construct the floating ballast bed plate end isolation mounting of floating ballast bed structure as floating plate.

The present invention's floating ballast bed plate end isolation mounting realizes like this, comprise top board, base plate, flexible member and damping element, flexible member and damping element are arranged between top board and base plate, it is characterized in that top board being arranged plate end level to stopping means, plate end level comprises plate end horizontal limit devices or/and plate end longitudinal limiting device to stopping means.

The structure of plate end horizontal limit devices and plate end longitudinal limiting device can be varied.Such as, plate end horizontal limit devices can be protruding for the cross spacing that top board is arranged; Plate end horizontal limit devices also can be made up of cross spacing plate, adjusting bolt and locking nut; Plate end horizontal limit devices can also be made up of cross spacing plate, adjusting bolt and tune gap pad.Plate end longitudinal limiting device can be made up of longitudinal spacing plate, adjusting bolt and locking nut, or is made up of longitudinal spacing plate, adjusting bolt and tune gap pad; Plate end longitudinal limiting device also can be that the longitudinal spacing that top board is arranged is protruding; Plate end longitudinal limiting device can also be made up of longitudinal spacing part and locking cushion block, and longitudinal spacing part comprises gathering sill, and locking cushion block is arranged in gathering sill.In order to easy to adjust, locking cushion block is made up of at least two son locking cushion blocks, and according to actual needs, the thickness of different son locking cushion blocks can be identical, also can be different.In addition, in the present invention's floating ballast bed plate end isolation mounting, can also arrange inner horizontal to stopping means between top board and base plate, preferably, inner horizontal becomes one to the damping element of stopping means and plate end isolation mounting.

When the present invention's floating ballast bed plate end isolation mounting supports the end of two pieces of adjacent prefabricated short slabs simultaneously, basis equalization is realized in order to make the enabling capabilities of the present invention's floating ballast bed plate end isolation mounting to contiguous prefabricated short slab, flexible member and damping element are arranged symmetrically with along the horizontal midship section of the present invention's floating ballast bed plate end isolation mounting, that is, ensure that the elasticity below the prefabricated short slab of every block is identical with the quantity of damping element without part as far as possible.At this, the transverse direction of described the present invention floating ballast bed plate end isolation mounting is identical with the bearing of trend in gap between contiguous prefabricated short slab.Flexible member in the present invention's floating ballast bed plate end isolation mounting and the concrete form of damping element can be varied, and such as flexible member can be helical steel springs, disc spring, rubber spring, polyurethane spring, metal rubber and plastic complex spring or air spring; Damping element comprises Viscous fluid damper, orifice restriction type damper or macromolecular material solid damping element, and wherein macromolecular material solid damping element can be specifically rubber high damping element or polyurethane high damping element etc.It is to be noted especially, flexible member and damping element also can become one, such as, adopt the rubber spring of high resiliency, high damping, both use as flexible member, also use as damping element simultaneously.

For the purpose of safety, in the present invention's floating ballast bed plate end isolation mounting, the vertical stopping means of spring failure can also be set, after surprisingly losing efficacy to prevent spring, the excessive major hidden danger of being formed to rail vehicle operation security of prefabricated short slab deflection, for ensureing to realize above-mentioned purpose, in general, the stroke-limit of the vertical stopping means of spring failure is less than 10mm.In practical application, in order to simplify structure, reducing product cost, the damping element in vertical for spring failure stopping means and the present invention's floating ballast bed plate end isolation mounting can being become one.Such as, damping element in the present invention's floating ballast bed plate end isolation mounting is viscous shearing type damper or shearing-type macromolecular material solid damper, it is by damping material, plunger and damping urceolus are formed, fit clearance between the base plate of suitable control plunger and the present invention's floating ballast bed plate end isolation mounting or the fit clearance between the top board of damping urceolus and the present invention's floating ballast bed plate end isolation mounting, the technical requirements making fit clearance meet stroke to be less than 10mm, namely the damping element of vertical for spring failure stopping means and the present invention's floating ballast bed plate end isolation mounting can be realized to become one.

Linkage can be set between the present invention's floating ballast bed plate end isolation mounting and basis and in use play occur to prevent the present invention's floating ballast bed plate end isolation mounting, the structure of linkage is varied, such as linkage can be specifically the upper corresponding stone bolt arranged of connecting through hole and basis that the present invention's floating ballast bed plate end isolation mounting base plate is arranged, utilize stone bolt floating ballast bed for the present invention plate end isolation mounting can be realized to be fixed on basis by connecting through hole, certainly based on this principle, linkage also can be the upper corresponding alignment pin arranged of connecting through hole and basis that base plate is arranged, utilize alignment pin to coordinate with connecting through hole and realize floating ballast bed for the present invention plate end isolation mounting to be fixed on basis, linkage also can be arrange mechanical brakeman between the present invention's floating ballast bed plate end isolation mounting base plate and basis, linkage can also be base plate bottom surface arrange to square foundation to outstanding positioning convex, positioning convex can be the concrete forms such as the pyramidal spine utilizing spot welding to pile.

During application the present invention's floating ballast bed plate end isolation mounting, preferably, with be that the prefabricated short slab of 1.2 ~ 8m to coordinate as floating plate and constructs floating ballast bed structure along rail longitudinal length, prefabricated short slab arranges the present invention's floating ballast bed plate end isolation mounting below the plate body end of rail longitudinal direction, often hold and at least arrange two, the present invention's floating ballast bed plate end isolation mounting is arranged between prefabricated short slab and basis, and the longitudinal midship section being symmetrical in prefabricated short slab is arranged, and utilizes shear hinge to be connected between prefabricated short slab.When to use the present invention's floating ballast bed plate end isolation mounting and Elastic Isolator simultaneously, preferably, the vertical stiffness of the present invention's floating ballast bed plate end isolation mounting is 1.5 ~ 5 times of an Elastic Isolator vertical stiffness.This is because for same prefabricated short slab end largest amount of subsidence permissible value, the strong point is more outer more saves flexible member, is conducive to reducing costs, and this vertical stiffness distribution technique heterogeneous, can play a multiplier effect, economy is better.For the ease of adjusting the working depth of prefabricated short slab, the top board surface of the present invention's floating ballast bed plate end isolation mounting can also arrange height adjusting cushion plate, height adjusting cushion plate is arranged between the present invention's floating ballast bed plate end isolation mounting and prefabricated short slab, by adjusting the thickness of height adjusting cushion plate, realize heightening and leveling of prefabricated short slab.When prefabricated short slab is by the present invention's floating ballast bed plate end isolation mounting and Elastic Isolator common support, not only need the thickness adjusting height adjusting cushion plate between the present invention's floating ballast bed plate end isolation mounting and prefabricated short slab, also to heighten the thickness of pad between the prefabricated short slab of corresponding adjustment and Elastic Isolator, and then heightening and leveling of prefabricated short slab could be realized completely.In order to compensate for clearance, avoid damage and prevent noise, at prefabricated short slab and plate end level, cushion pad can be set between stopping means.In addition, conveniently adjust and eliminate gap, prefabricated short slab and plate end level adjust gap backing plate to arranging between stopping means.

Be noted that especially, the implication of " level to " described in the present invention not refers to traditional horizontal direction, but refer in particular to the in-plane residing for two one steel rail treads of same circuit, this plane does not overlap with traditional horizontal direction under given conditions, such as, when the curved section of track, itself and traditional horizontal direction just present certain angle.In addition, in the present invention, utilize prefabricated short slab as floating plate, therefore sometimes utilize prefabricated short slab to substitute floating plate and be described.

The present invention's floating ballast bed plate end isolation mounting, by arranging plate end level at end face to stopping means, controls horizontal level and the stability of prefabricated short slab effectively.Application the present invention floating ballast bed plate end isolation mounting can by external force reasonable distribution between adjacent prefabricated short slab such as longitudinal brake force, vertical load and the lateral forces in use procedure, and achieve the optimization of isolation mounting position, quantity, under the prerequisite of the not obvious raising of isolation mounting cost, ensure that the largest amount of subsidence of floating plate and isolation mounting is in permissible range, eliminate See-saw effect simultaneously, ensure that traffic safety.

Compared with prior art, the present invention's floating ballast bed plate end isolation mounting can realize following advantage:

(1) the floating plate length be suitable for foreshortens to 1.2 ~ 8m from traditional 25m, the prefabricated production of floating plate is made to become possibility, the problem that the current tunnel space of thorough solution is limited and lifting device carrying is not enough, transport and lift all fast very convenient, solving a difficult problem for accommodation curve section curve element, save the maintenance stand-by period, difficulty of processing reduces greatly, product quality more easily ensures, substantially increases production efficiency, and the production cycle significantly shortens;

(2) the present invention's floating ballast bed plate end isolation mounting is set below adjacent prefabricated short slab plate end, improve local supporting capacity on the one hand, overcome weight after the more traditional floating plate contraction in length of the prefabricated short slab of monolithic, when vehicle enters from one end, the other end easily produces the harmful effect of turning over and sticking up, and limits the distortion of rail; On the other hand, the plate end level that the present invention's floating ballast bed plate end isolation mounting is arranged effectively can also limit rocking of prefabricated short slab in vehicle operation, under floating state to stopping means, therefore can ensure the security, stability and comfort of driving a vehicle;

(3) experiment of examination paving shows, utilize the present invention's floating ballast bed plate end isolation mounting and prefabricated short slab to construct floating ballast bed speed of application can realize each working group in tunnel and complete more than 75m every day, efficiency of construction obtains and greatly promotes, and estimates that ground or elevated line speed of application can reach more than 120m;

(4) the present invention's floating ballast bed plate end isolation mounting is arranged on the plate end of prefabricated short slab, for identical plate end largest amount of subsidence permissible value, plate end isolation mounting being arranged prefabricated short slab plate body be arranged on compared with other positions of plate body, the load-carrying properties of isolation mounting play more abundant, required flexible member is minimum, stability is also better, and cost performance is higher.

In sum, the present invention's floating ballast bed plate end isolation mounting can realize being that the prefabricated short slab of 1.2 ~ 8m constructs floating ballast bed structure jointly with length, the production of the prefabricated of floating plate and type hoisting construction is made to become possibility, to achieve longitudinal direction and the cross spacing of prefabricated short slab to stopping means by arranging plate end level, thus ensured floating ballast bed structure stability when driving and safety, substantially increase speed of application, be conducive to the further reduction of erection time, reduce difficulty of construction, save production cost.The present invention's floating ballast bed plate end isolation mounting is practical, safe and reliable, and cost performance is higher, and market application foreground is very wide.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment one.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the structural representation of prefabricated short slab in embodiment one.

Fig. 4 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Fig. 1 isolation mounting.

Fig. 5 is the C portion enlarged drawing of Fig. 4.

Fig. 6 is the A-A sectional view of Fig. 4.

Fig. 7 is the B-B sectional view of Fig. 4.

Fig. 8 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment two.

Fig. 9 is the top view of Fig. 8.

Figure 10 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Fig. 8 isolation mounting.

Figure 11 is the structural representation of prefabricated short slab in embodiment two.

Figure 12 is the D portion enlarged drawing of Figure 10.

Figure 13 is the E-E sectional view of Figure 10.

Figure 14 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment three.

Figure 15 is the top view of Figure 14.

Figure 16 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 14 isolation mounting.

Figure 17 is the structural representation of the present invention's floating ballast bed plate end isolation mounting not comprising plate end longitudinal limiting device in embodiment four.

Figure 18 is the F direction view of Figure 17.

Figure 19 is the structural representation of longitudinal spacing part in embodiment four.

Figure 20 is the structural representation of locking cushion block in embodiment four.

Figure 21 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment four after assembled plate end longitudinal limiting device.

Figure 22 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 21 isolation mounting.

Figure 23 is the G portion enlarged drawing of Figure 22.

Figure 24 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment five.

Figure 25 is the top view of Figure 24.

Figure 26 is the structural representation of prefabricated short slab in embodiment five.

Figure 27 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 24 isolation mounting.

Figure 28 is the H portion enlarged drawing of Figure 27.

Figure 29 is the J direction view of Figure 27.

Figure 30 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment six.

Figure 31 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment seven.

Figure 32 is the top view of Figure 31.

Figure 33 is the structural representation of prefabricated short slab in embodiment seven.

One of application schematic diagram that Figure 34 is the floating ballast bed plate end of the present invention shown in Figure 31 isolation mounting.

Figure 35 is the application schematic diagram two of the floating ballast bed plate end of the present invention shown in Figure 31 isolation mounting.

Figure 36 is the K portion enlarged drawing of Figure 34.

Figure 37 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment eight.

Figure 38 is the top view of Figure 37.

Figure 39 is the structural representation of prefabricated short slab in embodiment eight.

Figure 40 is the left view of Figure 39.

Figure 41 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 37 isolation mounting.

Figure 42 is the L portion enlarged drawing of Figure 41.

Figure 43 is the M-M sectional view of Figure 42.

Figure 44 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment nine.

Figure 45 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 44 isolation mounting.

Figure 46 is the structural representation of prefabricated short slab in embodiment nine.

Figure 47 is the left view of Figure 46.

Figure 48 is the top view of Figure 44.

Figure 49 is the N portion enlarged drawing of Figure 45.

Figure 50 is the structural representation of the present invention's floating ballast bed plate end isolation mounting in embodiment ten.

Figure 51 is the upward view of Figure 50.

Figure 52 is the application schematic diagram of the floating ballast bed plate end of the present invention shown in Figure 50 isolation mounting.

Figure 53 is the structural representation of prefabricated short slab in embodiment ten.

Figure 54 is the P portion enlarged drawing of Figure 52.

Figure 55 is structural representation and the application schematic diagram of the present invention's floating ballast bed plate end isolation mounting in embodiment 11.

Figure 56 is the Q direction view of Fig. 1.

Detailed description of the invention

Embodiment one

The present invention's floating ballast bed plate end isolation mounting as depicted in figs. 1 and 2, comprise top board 10, base plate 11, flexible member 12 and damping element 13, flexible member 12 and damping element 13 are arranged between top board 10 and base plate 11, this routine elastic element 12 is specially eight helical steel springs, damping element 13 is specially orifice restriction type damper, and flexible member 12 and damping element 13 are arranged symmetrically with along the horizontal midship section of floating ballast bed plate end isolation mounting.In addition, top board 10 is also arranged plate end level to stopping means, plate end level is made up of to stopping means plate end horizontal limit devices and plate end longitudinal limiting device.Wherein, plate end horizontal limit devices is the cross spacing projection 14 that top board 10 is welded and fixed, and plate end longitudinal limiting device is the longitudinal spacing projection 15 that top board 10 is welded and fixed.

To coordinate with the prefabricated short slab of structure shown in Fig. 3 for aforementioned the present invention floating ballast bed plate end isolation mounting below and construct novel floating ballast bed structure application of the present invention is described in detail.As shown in Figure 3, prefabricated short slab length is 3.57m, on prefabricated short slab, integrated setting has anchoring piece 9, in addition, the prefabricated short slab of every block is also provided with four reserved through holes 8, prefabricated short slab arranges the installation gap 60 of the present invention's floating ballast bed plate end isolation mounting along the plate body end of rail longitudinal direction, prefabricated short slab arranges the preformed groove 61 for placing the present invention's floating ballast bed plate end isolation mounting below the plate body end of rail longitudinal direction.The another one effect arranging preformed groove 61 is, in the height direction for plate end isolation mounting provides one to allow bit space, in order to avoid the height that prefabricated short slab departs from basis is excessive, affects stability.Accordingly, the side elevation 80 installing gap 60 place in the present invention's floating ballast bed plate end isolation mounting in the protruding 14 corresponding prefabricated short slabs of cross spacing is arranged, and in protruding 15 corresponding diagram 3 of longitudinal spacing, the side elevation 81 of prefabricated short slab end is arranged.As shown in Fig. 4 and Figure 56, what utilize prefabricated short slab shown in the floating ballast bed plate of the present invention shown in Fig. 1 end isolation mounting and Fig. 3 to form is floating ballast bed, for convenience of explanation, is 1,2 and 3 by prefabricated short slab number consecutively.In floating ballast bed structure, rail 17 is fixed on prefabricated short slab by rail fastening (not shown), wherein, as shown in Figure 7, integrated setting joint sheeve 22 on reserved through hole 8 inwall that built-in vibration-isolating device 5 comprises Elastic Isolator 25 and prefabricated short slab, Elastic Isolator 25 is bearing on the support stop 23 that is fixedly installed in joint sheeve 22 by heightening pad 24, thus to realize being built in prefabricated short slab and to give elastomeric bearing to prefabricated short slab.In addition, the vertical stiffness of a floating ballast bed plate end isolation mounting 6 is 1.5 times of Elastic Isolator 25 vertical stiffness.

Be applied between prefabricated short slab 1 and 2 for the present invention's floating ballast bed plate end isolation mounting, as shown in Fig. 5, Fig. 6 and Figure 56, during application, floating ballast bed plate end isolation mounting carries the adjacent panels end of prefabricated short slab 1 and 2 simultaneously, cross spacing projection 14 in floating ballast bed plate end isolation mounting keep off respectively lean against prefabricated short slab 1 and 2 end install opening position side elevation 80 on, the longitudinal spacing projection 15 in floating ballast bed plate end isolation mounting keep off respectively lean against prefabricated short slab 1 and 2 end side elevation 81 on.In order to the gap that floating plate vibration during compensation work produces, avoid damage simultaneously and prevent noise, the cushion pad 18 that elastomeric material is made is set between cross spacing protruding 14 and the side elevation 80 of prefabricated short slab 1 and 2, the cushion pad 19 that elastomeric material is made is set between longitudinal spacing protruding 15 and the side elevation 81 of prefabricated short slab 1 and 2.Can be clearly seen that from Fig. 5 and Figure 56, each floating ballast bed plate end isolation mounting carries two pieces of adjacent prefabricated short slabs simultaneously, this reason that to be also requirement flexible member 12 and damping element 13 be arranged symmetrically with along the horizontal midship section of floating ballast bed plate end isolation mounting, exactly may be consistent in order to ensure to overcome to the elastomeric bearing of the prefabricated short slab of every block.Floating ballast bed plate end isolation mounting is arranged between prefabricated short slab and basis 21, every one end of prefabricated short slab arranges two, two floating ballast bed plate end isolation mountings are symmetrical arranged along longitudinal midship section of prefabricated short slab, and each floating ballast bed plate end isolation mounting supports two pieces of adjacent prefabricated short slabs simultaneously, floating ballast bed plate end isolation mounting is arranged in the preformed groove 61 of prefabricated short slab 2 end, in use play is there is in order to prevent floating ballast bed plate end isolation mounting, after location, stone bolt 20 is utilized floating ballast bed plate end isolation mounting and basis 21 to be fixed together by the connecting through hole 16 that base plate 11 is arranged, the plan-position in the prefabricated short slab of so every block direction is all around obtained by plate end isolation mounting to be determined, and this location is realized by flexible member, vibration isolating effect can not be affected.Conveniently adjust the working depth of prefabricated short slab, between the top board 10 and prefabricated short slab of floating ballast bed plate end isolation mounting, be also provided with the height adjusting cushion plate 7 for adjusting height.Like this, the prefabricated short slab of each block is built in Elastic Isolator 25 in plate body by four respectively and four floating ballast bed plate end isolation mountings 6 be positioned under plate support jointly, thus leave surface, basis 21, form floating struction, heightening of prefabricated short slab and leveling can be realized by the thickness heightening pad 24 and height adjusting cushion plate 7, be connected by shear hinge 4 again between adjacent prefabricated short slab, shear hinge 4 is fastened on the anchoring piece 9 of contiguous prefabricated short slab respectively, Relative sliding can be produced along own axes direction between the two-part structure of shear hinge, and realize between contiguous prefabricated short slab in horizontal and vertical power transmission, and then form floating ballast bed.During maintenance floating ballast bed plate end isolation mounting 6, by instruments such as jack, can realize taking out or loading floating ballast bed plate end isolation mounting 6 by installing gap 60, not needing in process to dismantle rail, therefore the Window time of rail vehicle operation is utilized just can to complete, very convenient.Illustrate that a bit, in Figure 56, rail does not specifically illustrate.

Based on above-mentioned know-why, the present invention's floating ballast bed plate end isolation mounting goes for the prefabricated short slab of length in 1.2 ~ 8m scope, by arranging the present invention's floating ballast bed plate end isolation mounting between contiguous prefabricated short slab, plate end level is utilized to achieve longitudinal direction and the cross spacing of prefabricated short slab to stopping means, utilize again shear hinge to realize longitudinal direction between prefabricated short slab to connect and power transmission, thus ensure floating ballast bed structure stability when driving and safety.The application of the present invention's floating ballast bed plate end isolation mounting makes prefabricated short slab use as floating plate becomes possibility, and then the prefabricated achieving floating plate is produced and type hoisting construction in tunnel, substantially increases speed of application, is conducive to the further reduction of erection time, reduce difficulty of construction, save production cost.In summary, the present invention's floating ballast bed plate end isolation mounting is practical, safe and reliable, and cost performance is higher, and market application foreground is very wide.

In the technical scheme of this example describes, with flexible member 12 for helical steel springs, damping element 13 is viscous shearing-type damping device is that example is described, in actual applications, the concrete form of flexible member and damping element can be varied, and such as flexible member can be other steel springs such as disc spring, rubber spring, rubber-metal complex spring, polyurethane spring or air spring etc.; Damping element can be Viscous fluid damper or orifice restriction type damper, can also be macromolecular material solid damping element, the damping element be such as directly made up of the solid such as high-damping rubber or high-damping polyurethane damping material.It is to be noted especially, flexible member and damping element also can become one, such as, adopt the rubber spring of high resiliency, high damping, namely use as flexible member, also use as damping element simultaneously.As long as the needs of vibration isolation can be met, can be applied among the present invention.In addition, for the ease of implementing Height Adjustment, height adjusting cushion plate 7 is the same with heightening pad 24, also can arrange polylith, and thickness also can be different.

In this example, stone bolt 20 is utilized floating ballast bed for the present invention plate end isolation mounting and basis 21 to be fixed together by the connecting through hole 16 that base plate 11 is arranged, in actual applications, also the upper corresponding detent fit arranged of the connecting through hole that base plate is arranged and basis can be utilized the two to be fixed together, also can play same effect, accompanying drawing is described no longer in addition.

This example is only that 1.5 times of an Elastic Isolator vertical stiffness are described for the vertical stiffness of a floating ballast bed plate end isolation mounting, in actual application, different according to the condition of engineer applied, the vertical stiffness of a floating ballast bed plate end vibration isolator can be 1.5 ~ 5 times of an Elastic Isolator vertical stiffness.This is because, for same prefabricated short slab end largest amount of subsidence permissible value, on the one hand, the strong point is more outer more saves flexible member, on the other hand, the vertical stiffness of outermost flexible member is larger also more saves flexible member, be conducive to reducing costs, this vertical stiffness distribution technique heterogeneous, can play a multiplier effect, economy is better, therefore can be optimized as required in engineering design process, and this point is equally applicable to of the present invention other and adopts the technical scheme of floating ballast bed plate end isolation mounting and Elastic Isolator simultaneously.

Embodiment two

The present invention's floating ballast bed plate end isolation mounting as shown in Figure 8 and Figure 9, be with the difference of embodiment one, floating ballast bed plate end isolation mounting arranges two groups of plate end longitudinal limiting devices altogether, often organize plate end longitudinal limiting device to be made up of longitudinal spacing plate 33, adjusting bolt 35 and locking nut 34, adjusting bolt 35 runs through gripper shoe 36 and arranges, together with gripper shoe 36 is welded and fixed with cross spacing protruding 14 and top board 10.

Prefabricated short slab as shown in figure 11, is the prefabricated short slab of every block is provided with four resettlement grooves coordinated with Elastic Isolator 27 with the difference of short slab prefabricated shown in Fig. 3, the end face of this external prefabricated short slab is symmetrically arranged with the shear hinge 31 of two middle-set-types.

Be described below in conjunction with the application of short slab prefabricated shown in Figure 11 to this routine described the present invention floating ballast bed plate end isolation mounting.As depicted in figure 10 and figure 13, for convenience of explanation, be 28,29 and 30 by prefabricated short slab number consecutively, the prefabricated short slab of every block is combined by four Elastic Isolators 25 and four the present invention's floating ballast bed plate end isolation mountings 32 and is given resiliency supported, adjacent prefabricated short slab realizes longitudinal connection by middle-set-type shear hinge 31 again, and then is spliced into floating ballast bed.Wherein, Elastic Isolator 25 side in the resettlement groove 27 of prefabricated short slab, and carries prefabricated short slab by height adjusting cushion plate 39.In addition, the vertical stiffness of a floating ballast bed plate end isolation mounting 32 is 3 times of Elastic Isolator 25 vertical stiffness.Specifically to be applied as example between prefabricated short slab 28 and 29, as shown in figure 12, the present invention's floating ballast bed plate end isolation mounting is supported on the adjacent end portion of prefabricated short slab 28 and 29 simultaneously, cross spacing projection 14 in floating ballast bed plate end isolation mounting is supported in prefabricated short slab 28 and 29 respectively installs on the side elevation 80 at gap 60 place, the cushion pad 38 that elastane is made is set between cross spacing protruding 14 and the side elevation 80 of prefabricated short slab 28 and 29, longitudinal spacing plate 33 in two groups of plate end longitudinal limiting devices is supported in prefabricated short slab 28 and 29 respectively to be installed on the side elevation 82 at gap 60 place, the cushion pad 37 that elastane is made is set between longitudinal spacing plate 33 and side elevation 82.

In technical scheme described in this example, because the plate end longitudinal limiting device of the present invention's floating ballast bed plate end isolation mounting has the adjustable advantage in position, therefore the requirement to floating ballast bed plate end isolation mounting putting position precision can be reduced, along prefabricated short slab longitudinal direction put on a small quantity error can by adjustment adjusting bolt 35 revise, recycling locking nut 34 latched position, more convenient and practical.Be noted that, plate end longitudinal limiting device is except utilizing longitudinal spacing plate, adjusting bolt and locking nut and forming this example described, also longitudinal spacing plate, adjusting bolt and tune gap pad can be utilized to form, after adjustment adjusting bolt holds out against side elevation 82, embed between gripper shoe and longitudinal spacing plate and adjust gap pad, thus by locking position, also same effect can be realized.Owing to being common technology, at this no longer extra accompanying drawing, be only described with word, also in protection scope of the present invention.

In addition, this example is only that 3 times of an Elastic Isolator vertical stiffness are described for the vertical stiffness of a floating ballast bed plate end isolation mounting, in actual application, different according to the condition of engineer applied, the vertical stiffness of a floating ballast bed plate end vibration isolator can be 1.5 ~ 5 times of an Elastic Isolator vertical stiffness, this point is equally applicable to of the present invention other and adopts the technical scheme of floating ballast bed plate end isolation mounting and Elastic Isolator simultaneously, no longer repeats in following examples.

Embodiment three

Based on know-why described in embodiment two, the present invention's floating ballast bed plate end isolation mounting as shown in Figure 14 and Figure 15, be with the difference of embodiment two, in this example, floating ballast bed plate end isolation mounting is except arranging two groups respectively by longitudinal spacing plate 33, outside the plate end longitudinal limiting device that adjusting bolt 35 and locking nut 34 are formed, also arrange two groups respectively by cross spacing plate 40, the plate end horizontal limit devices that adjusting bolt 42 and locking nut 41 are formed, wherein, adjusting bolt 42 in plate end horizontal limit devices runs through gripper shoe 43 and arranges, gripper shoe 43 is welded respectively with top board 10 and gripper shoe 36 and is fixed together.

When the present invention's floating ballast bed plate end isolation mounting floating ballast bed plate end isolation mounting 32 substituted in Figure 10 applied described in this example is constructed floating ballast bed, as shown in figure 16, floating ballast bed plate end isolation mounting is supported on the adjacent end portion of prefabricated short slab 28 and 29 simultaneously, cross spacing plate 40 on floating ballast bed plate end isolation mounting in two groups of plate end horizontal limit devices keep off respectively lean against prefabricated short slab 28 and 29 side elevation 80 on, the cushion pad 38 that resilient foam material is made is set between the side elevation 80 of cross spacing plate 40 and prefabricated short slab 28 and 29; Longitudinal spacing plate 33 in two groups of plate end longitudinal limiting devices keeps off respectively leaning against in prefabricated short slab 28 and 29 and installs on the side elevation 82 at gap 60 place, arranges the cushion pad 37 that resilient foam material is made between longitudinal spacing plate 33 and side elevation 82.

In this routine described technical scheme, because the plate end longitudinal limiting device in the present invention's floating ballast bed plate end isolation mounting and plate end horizontal limit devices all can carry out position adjustment, lower to the position accuracy demand of floating ballast bed plate end isolation mounting when therefore using, installation is more convenient.Particularly because the plate end longitudinal limiting device of the different prefabricated short slab of correspondence and plate end horizontal limit devices are independently arranged, therefore in the situations such as bend, contiguous prefabricated short slab is in a certain angle when putting, and can realize the spacing adjustment of difference to adjacent two pieces of prefabricated short slabs, very convenient.Based on the principle described in embodiment two, in the technical scheme of this routine described type, plate end horizontal limit devices also can utilize cross spacing plate, adjusting bolt and tune gap pad to form, and also can realize same technique effect, all in protection scope of the present invention.

Embodiment four

The present invention's floating ballast bed plate end isolation mounting as shown in Figure 17, Figure 18, Figure 19 and Figure 20, be with the difference of embodiment one, in floating ballast bed plate end isolation mounting, the bottom of cross spacing projection 14 is provided with two gap 44, in addition, in order to prevent, in use procedure and between basis, Relative sliding occurs, the bottom surface of base plate 11 is arranged multiple positioning convex 45, in this example, positioning convex 45 is the pyramidal spines utilizing spot welding to pile.In addition, the plate end longitudinal limiting device in floating ballast bed plate end isolation mounting is made up of longitudinal spacing part 46 and locking cushion block 49, comprises gathering sill 47 and longitudinal spacing plate 48 in longitudinal spacing block part 46, and locking cushion block 49 can be inserted in gathering sill 47.From the side of cross spacing projection 14, along gap 44, longitudinal spacing part 46 and cross spacing projection 14 are assembled together, protruding 14 parts of cross spacing are made to be embedded in gathering sill 47, the locking cushion block 49 of two different-thickness is utilized to clog in gathering sill 47 between longitudinal spacing plate 48 and cross spacing projection 14, form complete floating ballast bed plate end isolation mounting 50, specifically as shown in figure 21.

As shown in Figure 22 and Figure 23, this routine described the present invention floating ballast bed plate end isolation mounting 50 coordinates when constructing floating ballast bed with short slab prefabricated shown in Fig. 3, coordinate with prefabricated short slab 1 and 2 for floating ballast bed plate end isolation mounting 50, below the plate end floating ballast bed plate end isolation mounting 50 being placed in contiguous prefabricated short slab 1 and 2, cross spacing projection 14 in floating ballast bed plate end isolation mounting 50 is supported on the side elevation 80 of prefabricated short slab 1 and 2 respectively, also arranges the cushion pad 52 that elastomeric material is made between cross spacing protruding 14 and the side elevation 80 of prefabricated short slab 1 and 2 respectively; The longitudinal spacing part 46 of protruding 14 both sides of mobile cross spacing, the longitudinal spacing plate 48 in both sides longitudinal spacing part 46 is made to be supported on the side elevation 82 of prefabricated short slab 1 and 2 respectively, the cushion pad 51 that elastomeric material is made is set between the side elevation 82 of longitudinal spacing part 46 and prefabricated short slab 1 and 2, to lock in the gathering sill 47 of cushion block 49 close packed between longitudinal spacing plate 48 and cross spacing projection 14 again, the holding state of locking longitudinal spacing part 46.In addition, the vertical stiffness of a floating ballast bed plate end isolation mounting 50 is 5 times of built-in vibration-isolating device 5 Elastic vibration isolator (not specifically illustrating in a Figure 22) vertical stiffness.

In this example, floating ballast bed plate end isolation mounting 50 have employed the plate end longitudinal limiting device be made up of longitudinal spacing part 46 and locking cushion block 49, putting error on a small quantity and can be revised by adjustment longitudinal spacing part 46 therefore along prefabricated short slab longitudinal direction, the holding state of locking cushion block 49 pairs of longitudinal spacing parts 46 of recycling appropriate size locks, both convenient and practical, safe and reliable again.It is pointed out that and conveniently tackle adjustment, locking cushion block can at least be made up of two or more son locking cushion blocks, is combined into the locking cushion block of suitable thickness so according to actual needs, very convenient.Bottom surface due to base plate 11 in floating ballast bed plate end isolation mounting 50 arranges multiple positioning convex 45, can effectively prevent from, in use procedure and between basis, Relative sliding occurs, therefore be fixed without the need to arranging stone bolt again between floating ballast bed plate end isolation mounting and basis, the size of base plate 11 also can suitably reduce, structure is simpler, is also more conducive to saving material.Certainly, except arranging except positioning convex 45 on base plate 11, also can adopt, between floating ballast bed plate end isolation mounting base plate and basis, the additive methods such as mechanical brakeman are set to prevent Relative sliding, as long as can relative movement between achieve effective control floating ballast bed plate end isolation mounting and basis, identical effect can be played.Be noted that especially, in floating ballast bed plate end isolation mounting 50 described in this example, owing to being provided with two gap 44 in the bottom of cross spacing projection 14, therefore heightening in leveling process, as long as the condition making adopted height adjusting cushion plate meet monolithic thickness to be less than gap height, just can realize by gap 44 operation that height adjusting cushion plate (not specifically illustrating in figure) got by dress, need not all plate end isolation mounting be taken out from prefabricated short slab at every turn, more convenient to operate.

Embodiment five

The present invention's floating ballast bed plate end isolation mounting, is with the difference of embodiment one as shown in figures 24 and 25, and longitudinal spacing projection 15 is no longer arranged in the middle part of top board 10, but is arranged on the side of top board 10.In addition, this routine elastic element 12 is specially four helical steel springs.In addition, for the purpose of safety, the vertical stopping means of spring failure has also been set up in floating ballast bed plate end isolation mounting, the vertical stopping means of spring failure is specially four steel pipes 63 be weldingly fixed on base plate 11, under prefabricated short slab Gravitative Loads, steel pipe 63 top is stroke-limit to the gap of top board 10 soffit, and this stroke-limit is 5mm.

Adopt the prefabricated short slab of structure shown in Figure 26 as floating plate, prefabricated short slab length is 1.2m, on prefabricated short slab, integrated setting has anchoring piece 9, because the plate body of prefabricated short slab is very short, for ensureing the intensity of plate body, prefabricated short slab does not arrange reserved through hole, below for prefabricated short slab shown in plate end isolation mounting floating ballast bed this example described and Figure 25 with the use of being described.As shown in Figure 27, Figure 28 and Figure 29, during application, floating ballast bed plate end isolation mounting carries prefabricated short slab 1, cross spacing projection 14 in floating ballast bed plate end isolation mounting be supported on gap 60 place is installed in prefabricated short slab 1 side elevation 80 on, longitudinal spacing projection 15 is supported on the side elevation 81 of prefabricated short slab 1 end.In order to the gap that short slab vibration prefabricated during compensation work produces, avoid damage simultaneously and prevent noise, the cushion pad 18 that elastomeric material is made is set between the side elevation 80 in cross spacing protruding 14 and prefabricated short slab 1, the cushion pad 19 that elastomeric material is made is set between the side elevation 81 in longitudinal spacing protruding 15 and prefabricated short slab 1.The prefabricated short slab of each block is by four floating ballast bed plate end isolation mounting elastomeric bearings, by adjusting the gross thickness of height adjusting cushion plate 7 between each floating ballast bed plate end isolation mounting and prefabricated short slab, heightening and leveling of prefabricated short slab can be realized, prefabricated short slab links together by recycling shear hinge, namely forms floating ballast bed.Illustrate that a bit, in Figure 29, rail does not specifically illustrate.

It should be noted that, because each floating ballast bed plate end isolation mounting only supports one piece of prefabricated short slab, therefore the layout of floating ballast bed plate end isolation mounting elastic element 12 and damping element 13 also no longer needs to follow the requirement that the horizontal midship section along floating ballast bed plate end isolation mounting is arranged symmetrically with.

This example is described for the prefabricated short slab that 1.2m is long as floating plate, and in general, the prefabricated short slab of below 2m all can only utilize the present invention's floating ballast bed plate end isolation mounting to support, and need not be equipped with Elastic Isolator in addition.The prefabricated short slab plate of this structure is long shorter, weight is lighter, send defeated and transports convenient, and owing to not arranging Elastic Isolator, plate body structure is simpler, be easy to processing, be conducive to reducing costs, in addition, support owing to only utilizing floating ballast bed plate end isolation mounting, by means of only adjustment height adjusting cushion plate thickness, prefabricated short slab is heightened and leveling, therefore heighten leveling process more simple, be conducive to improving speed of application further.In addition, in this routine described technical scheme, owing to having set up four steel pipes 63 as the vertical stopping means of spring failure in floating ballast bed plate end isolation mounting, when there is the fortuitous events such as fracture when spring, prefabricated short slab sinks, due to the existence of the vertical stopping means of spring failure, prefabricated short slab can only sink down into the apical support of steel pipe 63 till top board 10 soffit, therefore effectively can improve the safety of operation.According to this principle, the concrete form of the vertical stopping means of spring failure can carry out diversified amplification, and such as steel pipe 63 also can be weldingly fixed on the soffit of top board 10.In addition, the vertical stopping means of spring failure, except utilizing steel pipe and making, can also utilize rod iron, steel plate etc. to make, also can realize same function.In addition, in this example for the stroke-limit between steel pipe 63 top and top board 10 soffit for 5mm is described, in practical application, stroke-limit can be set according to safety requirements, according to the track traffic relevant safety regulations of China, in general, this stroke-limit should be less than 10mm.

Be noted that in this routine described technical scheme, be arranged in prefabricated short slab and be symmetrical set to stopping means with the plate end level of two the present invention's floating ballast bed plate end isolation mountings of one end, should note when processing and put.

Embodiment six

Based on the know-why of embodiment one and embodiment five, the present invention's floating ballast bed plate end isolation mounting as shown in figure 30, be with the difference of embodiment one, the vertical stopping means of spring failure has been set up in floating ballast bed plate end isolation mounting, the vertical stopping means of spring failure is specially four steel pipes 63 be weldingly fixed on base plate 11, steel pipe 63 top is stroke-limit to the gap of top board 10 soffit, and this stroke-limit is 5mm.The set-up mode of steel pipe 63 is identical with embodiment five, in this accompanying drawing explanation no longer in addition.

The application process of the described floating ballast bed plate end isolation mounting of this example is identical with embodiment one, in this no longer repeated description.Compared with the technical scheme of embodiment five, because plate end isolation mounting floating ballast bed this example described can support the plate end of adjacent two pieces of prefabricated short slabs simultaneously, therefore the quantity of adopted floating ballast bed plate end isolation mounting 6 is less, overall ballast bed structure is simpler, be conducive to reducing construction link further, improve efficiency of construction.

Embodiment seven

The present invention's floating ballast bed plate end isolation mounting as shown in Figure 31 and Figure 32, be with the difference of embodiment one, damping element in floating ballast bed plate end isolation mounting is viscous shearing type damper, viscous shearing type damper is specifically made up of fluid damping material 66, plunger 64 and damping urceolus 65, wherein plunger 64 is soldered integral with top board 10, and damping urceolus 65 is soldered integral with base plate 11.It is to be noted, this viscous shearing type damper also has the effect of the vertical stopping means of spring failure simultaneously, under prefabricated short slab Gravitative Loads, namely fit clearance between damping urceolus 65 and top board 10 soffit forms described stroke-limit, ensure that this stroke-limit is less than 10mm, when just can effectively prevent disconnected spring etc. from surprisingly occurring, the harm that prefabricated short slab excessive convergence causes traffic safety, in addition, plunger 64 and damping urceolus 65 is utilized to cooperatively interact, also constitute inner horizontal in floating ballast bed plate end isolation mounting to stopping means, because plunger 64 and damping urceolus 65 are connected with top board 10 and base plate 11 respectively, base plate 11 is fixed on basis by stone bolt 20, top board 11 leans against on the side elevation of prefabricated short slab plate end by plate end level to stopping means gear, therefore when prefabricated short slab occurred level displacement, can drive top board 10 and plunger 64, with base plate 11 and damping urceolus 65, relative movement occurs, when horizontal movement is enough large, plunger 64 and damping urceolus 65 can stick together, and then the further generation of limit levels displacement, thus the level that plays is to spacing effect.

During application, different according to the actual conditions of application, the form of structure of the prefabricated short slab that the present invention's floating ballast bed plate end isolation mounting is suitable for can be varied, the position of corresponding floating ballast bed plate end isolation mounting is also different, such as, when outer space allows, floating ballast bed plate end isolation mounting also can carry out dress from the outside of prefabricated short slab and get.Floating ballast bed as shown in figure 34, adopting the prefabricated short slab of structure shown in Figure 33, prefabricated short slab only being arranged four for assembling the preformed groove 61 of floating ballast bed plate end isolation mounting.Be described with the example that is applied as of floating ballast bed plate end isolation mounting between prefabricated short slab 1 and 2, floating ballast bed plate end isolation mounting 6 carries the plate end of adjacent two pieces of prefabricated short slabs 1 and 2 simultaneously, cross spacing projection 14 on floating ballast bed plate end isolation mounting 6 keep off respectively lean against prefabricated short slab 1 and 2 end side elevation 80 on, the cushion pad 18 that resilient foam material is made is set between cross spacing protruding 14 and side elevation 80, longitudinal spacing projection 15 in floating ballast bed plate end isolation mounting keep off respectively lean against prefabricated short slab 1 and 2 plate end side elevation 81 on, the cushion pad 19 that resilient foam material is made is set between longitudinal spacing projection and side elevation 81.Prefabricated short slab links together by recycling shear hinge 4, forms floating ballast bed.

Owing to being provided with inner horizontal that plate end level that cross spacing protruding 14 and longitudinal spacing protruding 15 form forms to stopping means and plunger 64 and damping urceolus 65 in adopted floating ballast bed plate end isolation mounting 6 to stopping means simultaneously, therefore better to limit effect to the level of prefabricated short slab, in addition, vertical for spring failure stopping means and inner horizontal are integrated in damping element to stopping means simultaneously, namely the safety in prefabricated floating plate railway roadbed of the present invention use can effectively be improved, do not increase again the structural complexity of floating ballast bed plate end isolation mounting, be conducive to saving space, very economical and practical.Certainly, based on this routine described know-why, the concrete structure of the vertical stopping means of spring failure also can change to some extent, such as, fit clearance between the base plate that can utilize plunger and floating ballast bed plate end isolation mounting is as stroke-limit, control this stroke-limit and be less than 10mm, also can play identical effect.

In addition, be noted that, in the floating ballast bed structure that the present invention's floating ballast bed plate end isolation mounting is formed, in order to improve the globality of local, prevent stressed the transfiniting of indivedual floating ballast bed plate end isolation mounting under the specific conditions such as brake hard from causing damaging, in the connection procedure of prefabricated short slab, multiple floating plate group can be set in whole floating ballast bed structure, between floating plate group, shrinkage joint is set.Such as, as shown in figure 35, prefabricated short slab 67a, the prefabricated short slab of the polyliths such as 67b is by the longitudinal spacing projection 15 as plate end longitudinal limiting device, cushion pad 19 and shear hinge 4 are linked to be one along rail longitudinally gapless floating plate group, equally, prefabricated short slab 68a, 68b, the prefabricated short slab of the polyliths such as 68c and 68d is by being linked to be another along rail longitudinally gapless floating plate group as the longitudinal spacing protruding 15 of plate end longitudinal limiting device and cushion pad 19 and shear hinge 4, prefabricated short slab 69a, the prefabricated short slab of the polyliths such as 69b is by being linked to be next along rail longitudinally gapless floating plate group as the longitudinal spacing protruding 15 of plate end longitudinal limiting device and cushion pad 19 and shear hinge 4, shrinkage joint 70 is provided with between adjacent floating plate group, be connected and power transmission by means of only shear hinge 4 in the adjacent floating plate group in shrinkage joint 70 place.The present invention's floating ballast bed plate end isolation mounting being arranged in shrinkage joint place only arranges plate end horizontal limit devices.Like this, multiple floating plate group is connected successively, and then forms whole floating ballast bed.This utilize multiple floating plate group to combine floating ballast bed, namely there is good continuity and globality, there is again stronger local autonomy, the relatively whole railway roadbed of each floating plate group is again an independently individuality, when special circumstances such as train generation brake hards, the floating ballast bed plate end isolation mounting that train place floating plate group and even adjacent floating plate group comprise carries jointly, shrinkage joint is utilized to bear prefabricated short slab because of the displacement produced of expanding with heat and contract with cold, therefore the setting of floating plate group in turn increases again the globality of local, make each floating ballast bed plate end isolation mounting in floating plate group stressed roughly the same, single floating ballast bed plate end isolation mounting is avoided excessively to carry damage.In general, the length of a floating plate group can control at about 10 ~ 40m, and certainly, according to the difference of environment for use, floating plate group length can change to some extent, and such as, in subway tunnel, the length of floating plate group can suitably lengthen, such as can more than 50m; In ground or overhead section, the length of floating plate group can be suitable shorter, such as lower than 20m.Preferably, the length of floating plate group is identical with the length of a row railcar or slightly long, by current train length, generally at about 25m.General at about 25m.It is to be noted, this know-why utilizing floating plate group and then form whole railway roadbed is equally also applicable to the technical scheme in the present invention described in other embodiments, comprise the scheme that floating ballast bed plate end isolation mounting and Elastic Isolator are set simultaneously, be described in the lump at this, no longer repeated description.Illustrate that a bit, in Figure 35, rail does not specifically illustrate.

Embodiment eight

The present invention's floating ballast bed plate end isolation mounting as shown in Figure 37 and Figure 38, be with the difference of embodiment seven, damping element in floating ballast bed plate end isolation mounting is shearing-type macromolecular material solid damper, and shearing-type macromolecular material solid damper is specifically made up of plunger 64, damping urceolus 65 and sulfuration high-damping rubber layer 72 between.In order to prevent floating ballast bed plate end isolation mounting 6 in use procedure from play occurring, base plate 11 soffit of floating ballast bed plate end isolation mounting 6 also utilizes built-up welding to arrange multiple positioning convex 45.It is to be noted, shearing-type macromolecular material solid damper in floating ballast bed plate end isolation mounting 6 is integrated with the function of inner horizontal to stopping means and the vertical stopping means of spring failure equally, show, utilize fit clearance between plunger 64 and base plate 11 as stroke-limit, as long as control this stroke-limit to be less than 10mm, the predetermined function of the vertical stopping means of spring failure just can be realized; And the high-damping rubber layer 72 attainable horizontal compression amount arranged between plunger 64 and damping urceolus 65 is very limited, based on known to the explanation of stopping means action principle to inner horizontal in embodiment seven, plunger 64, high-damping rubber layer 72 and damping urceolus 65 can realize the function limiting the displacement of prefabricated short slab comparative basis occurred level to a certain extent, and therefore this shearing-type macromolecular material solid damper can also realize the function of inner horizontal to stopping means simultaneously.In addition, according to use needs, longitudinal spacing projection 15 is only arranged in the side of cross spacing projection 14.

Be applied to as Figure 41, time floating ballast bed shown in Figure 42 and Figure 43, for the ease of seeing rectangular structure clearly, part rail has been clipped in Figure 41, be with the difference of embodiment seven, adopt the prefabricated short slab of structure shown in Figure 39 and Figure 40, prefabricated short slab one end is arranged installs gap 60, the other end arranges bulge-structure, the bulge-structure of one piece of prefabricated short slab can embed in the installation gap 60 of contiguous prefabricated short slab, prefabricated short slab is also provided with four spacing gap 71, the present invention's floating ballast bed plate end isolation mounting 6 carries adjacent two pieces of prefabricated short slabs simultaneously, be connected by shear hinge 4 again between adjacent prefabricated short slab, shear hinge 4 is fastened on the anchoring piece 9 of contiguous prefabricated short slab respectively.Plate end level in floating ballast bed plate end isolation mounting 6 to stopping means still by as plate end horizontal limit devices cross spacing protruding 14 and form as the longitudinal spacing projection 15 of plate end longitudinal limiting device, wherein, protruding 14 gears of cross spacing lean against on the side elevation 80 of prefabricated short slab bulge-structure end, are also provided with the cushion pad 18 that rubber is made between cross spacing protruding 14 and side elevation 80; Protruding 15 gears of longitudinal spacing lean against on the side elevation 81 of prefabricated short slab bulge-structure end, are also provided with the cushion pad 19 that rubber is made between longitudinal spacing protruding 15 and side elevation 81.In addition, also be provided with between contiguous prefabricated short slab independently level to stopping means, be described to stopping means for the independently level arranged between prefabricated short slab 1 and 2, as shown in figure 43, the bolster 74 that described level is made up to stopping means of the reinforced concrete limited post 73 and elastomeric material with basic 21 integrated setting is formed, limited post 73 coordinates respectively with the spacing gap 71 in prefabricated short slab 1 and 2, and bolster 74 is arranged between limited post 73 and prefabricated short slab 1 and 2.

Should be noted that during application, because the plate end level in plate end isolation mounting floating ballast bed this example described only acts on the bulge-structure of prefabricated short slab to stopping means, therefore it is directive when bearing the external force along prefabricated short slab longitudinal direction, for ensureing that the present invention floating ballast bed plate end isolation mounting plays position-limiting action when special circumstances such as brake hards, floating ballast bed for structure shown in Figure 41, should ensureing that the traffic direction of rail vehicle is along advancing from prefabricated short slab 3 to the direction of prefabricated short slab 1, hereby illustrating.

In technical scheme described in this example, owing to being provided with independently, level is to stopping means, and limited post is directly located on basis, and therefore the level of prefabricated short slab is to spacing more simple and reliable, and travel safety is better.Particularly when independently level is enough to stopping means intensity, plate end level can be omitted as required to the plate end longitudinal limiting device in stopping means, or the plate end horizontal limit devices omitted wherein, even in floating ballast bed plate end isolation mounting, plate end level can be set to stopping means or/and inner horizontal is to stopping means, be conducive to simplifying product structure, reduce cost of production.Because this type of technical scheme does not require emphasis the limit function of floating ballast bed plate end isolation mounting, therefore when preventing floating ballast bed plate end isolation mounting generation play, also only mechanical brakeman can be set between base plate and basis, at this, this kind of technical scheme is described with word, no longer in addition accompanying drawing.In addition, plunger 64 and base plate 11 is utilized to form the vertical stopping means of spring failure in this example, therebetween fit clearance is as stroke-limit, in practical application, also damping urceolus 65 and top board 10 can be utilized to form the vertical stopping means of spring failure, only need the fit clearance of the two to control at below 10mm.In addition, except the high-damping rubber material mentioned in embodiment, can also other solid damping materials such as high-damping polyurethane be adopted in shearing-type macromolecular material solid damper, identical function can be realized.

Be noted that in this routine described technical scheme, be arranged in prefabricated short slab and be symmetrical set to stopping means with the plate end level of two floating ballast bed plate end isolation mountings of one end, should note when processing and put.In addition, independently level is in stopping means, and limited post, except integral with basis instrument, also can arrange limited post separately, then limited post and basis is fixed together, and also can serve the same role.

Embodiment nine

Based on technical scheme described in embodiment eight, the present invention's floating ballast bed plate end isolation mounting as shown in Figure 44 and Figure 48, be with the difference of embodiment eight, the plate end level that floating ballast bed plate end isolation mounting is arranged is specially limited post 75 to stopping means, limited post 75 is made up of round steel pipe, and soldered integral with top board 10.In addition, four flexible members 12 are the complex spring that metal disc spring and elastic rubber material are formed jointly, and for ensureing metal disc spring uniform stressed, be also provided with steel plate respectively in the both sides up and down of metal disc spring, steel plate and elastic rubber material are sulfided into one.Because elastic rubber material also has good damping capacity simultaneously, therefore, flexible member 12 also possesses the function of damping element simultaneously, arranges damping element no longer in addition in floating ballast bed plate end isolation mounting.Because prefabricated short slab needs to realize level to spacing by floating ballast bed plate end isolation mounting, therefore require that floating ballast bed plate end isolation mounting play can not occur in use procedure, so corresponding gap 60 of installing arranges local junction plate on base plate 11, local junction plate is offered the connecting through hole 16 of strip.As shown in Figure 46 and Figure 47, in prefabricated short slab, the position of four spacing gap 71 is corresponding with limited post 75, when prefabricated short slab coordinates with floating ballast bed plate end isolation mounting, for coordinating of floating ballast bed plate end isolation mounting and prefabricated short slab 1 and 2, as shown in Figure 45 and Figure 49, floating ballast bed plate end isolation mounting is bearing in the below of prefabricated short slab 1 and 2 simultaneously, limited post 75 is embedded in the spacing gap 71 of corresponding setting on prefabricated short slab 1 and 2, in order to realize the effect of buffering and noise reduction, the rubber buffer 76 of shell-like is also provided with between limited post 75 and prefabricated short slab 1 and 2.After the position adjustment of floating ballast bed plate end isolation mounting, stone bolt 20 is utilized floating ballast bed plate end isolation mounting and basis to be fixed together by connecting through hole 16.

In technical scheme described in this example, because the height dimension of floating ballast bed plate end isolation mounting 6 elastic element 12 is less, not needing in prefabricated short slab to arrange preformed groove is that plate end isolation mounting is stepped down, and the structure of prefabricated short slab is simpler.Utilize the limited post 75 arranged in floating ballast bed plate end isolation mounting to realize the level of prefabricated short slab to spacing, at this, limited post 75 can use as plate end horizontal limit devices and plate end longitudinal limiting device simultaneously, and structure is very simple, and Horizontal limiting is effective.Because limited post 75 is arranged on floating ballast bed plate end isolation mounting, can move with floating ballast bed plate end isolation mounting, when therefore assembling with prefabricated short slab, can cooperatively interact and carry out position accurate adjustment, should use very convenient.Limited post 75 is upper outside except being welded in top board 10 in addition, securing member also can be utilized to be fixed on top board, maintain and replace of being more convenient for like this.

Embodiment ten

Based on know-why described in embodiment nine, this type of technical scheme can also carry out many differentiation, and this type of technical scheme is equally applicable to other forms of prefabricated short slab.The present invention as shown in Figure 50 and Figure 51 floating ballast bed plate end isolation mounting, is with the difference of embodiment one, and the limited post 75 that the plate end level of floating ballast bed plate end isolation mounting is made up to stopping means of square steel pipe is formed, and soldered integral with top board 10.

Accordingly, adopt prefabricated short slab as shown in Figure 53, compared with the prefabricated short slab shown in Fig. 2, the two ends of the prefabricated short slab that this example adopts are corresponding with limited post arranges four spacing gap 77 altogether.During application, as Figure 52, shown in Figure 54 and Figure 55, the present invention's floating ballast bed plate end isolation mounting 6 is still arranged in the preformed groove 61 of prefabricated short slab bottom, and a floating ballast bed plate end isolation mounting carries the end of adjacent two pieces of prefabricated short slabs simultaneously, during assembling, still be arranged between prefabricated short slab 1 and 2 for floating ballast bed plate end isolation mounting and be described, the limited post 75 of floating ballast bed plate end isolation mounting is embedded in the spacing gap 77 of corresponding setting on prefabricated short slab 1 and 2, in order to realize the effect of buffering and noise reduction, the elastic polyurethane cushion pad 76 of shell-like is also provided with between limited post 75 and prefabricated short slab 1 and 2.It is to be noted, described cushion pad 76 adopts the mode of cast-in-site to construct, during concrete operations, after limited post 75 and the mutual alignment of prefabricated short slab 1 and 2 are well placed, utilize bicomponent elastic polyurethane material, mix at the scene in the space that is then cast between limited post 75 and prefabricated short slab 1 and 2, after solidifying, namely form cushion pad.

In this routine described technical scheme, owing to adopting limited post 75 as plate end level to stopping means in floating ballast bed plate end isolation mounting 6, the structure of product is simpler, in addition, compared with embodiment one, apply this floating ballast bed plate end isolation mounting when constructing floating ballast bed, assembling process between floating ballast bed plate end isolation mounting and preset short slab is also simpler, the overall structure of railway roadbed is simplified, fine to limit effect to the level of preset short slab, therefore, the economy of the described this kind of technical scheme of this example and practicality better.

Embodiment 11

The floating ballast bed plate end of the present invention as shown in fig. 55 isolation mounting, be with the difference of embodiment one, in order to eliminate plate end level to the gap between stopping means and prefabricated short slab, in assembling or use procedure, between cross spacing protruding 14 and prefabricated short slab except cushion pad 18 is set, can also set up and adjust gap backing plate 78.Adjust gap backing plate 78 specifically can be made up of metal or plastic material, as long as the object eliminating unnecessary clearance can be reached, same effect can be realized.Certainly, in order to realize the object eliminating gap, also can arrange between longitudinal spacing projection and prefabricated short slab and adjusting gap backing plate, not specifically illustrating in figure.

Based on the know-why described in this example, in other embodiments of the present invention's floating ballast bed plate end isolation mounting, plate end level is to also can by arranging the object adjusted gap backing plate to reach and eliminate gap, accompanying drawing explanation no longer one by one between stopping means and prefabricated short slab.

It is to be noted; in the present invention, the shape of cross section of prefabricated short slab is not limited to the shape described in above-described embodiment, and according to requirement of engineering, prefabricated short slab also can be arranged to other shapes; as long as based on know-why of the present invention, also all in protection scope of the present invention.In addition, in actual applications, the concrete form of floating ballast bed plate end isolation mounting elastic element and damping element can be varied, and such as flexible member can be helical steel springs, disc spring, rubber spring, polyurethane spring, metal rubber and plastic complex spring or air spring; Damping element comprises Viscous fluid damper, orifice restriction type damper or macromolecular material solid damping element, and wherein macromolecular material solid damping element can be specifically rubber high damping element or polyurethane high damping element etc.It is to be noted especially, flexible member and damping element also can become one, such as, adopt the rubber spring of high resiliency, high damping, namely use as flexible member, also use as damping element simultaneously.As long as the needs of vibration isolation can be met, can be applied among the present invention.In addition, mainly with arranging eight helical steel springs in floating ballast bed plate end isolation mounting and a damping element is that example is described in embodiment, according to adopting, the kind of flexible member and damping element is different, the quantity of flexible member and damping element can change according to actual conditions, two even more damping elements such as can be set, also four can be arranged, five, six, seven, ten even more flexible members, but realize basis equalization to make the enabling capabilities of floating ballast bed plate end isolation mounting to contiguous prefabricated short slab, flexible member and damping element should be arranged symmetrically with along the middle vertical plane of floating ballast bed plate end isolation mounting transverse direction as far as possible, that is, ensure that the flexible member below the prefabricated short slab of every block is identical with the quantity of damping element as far as possible.

When existing pure built-in steel spring floating slab is installed, first floating plate scene side is wire-tie, fluid concrete again, also want curing concrete, after concrete curing is good, then place vibration isolator, then jacking leveling, many procedures.And in the technical scheme that the present invention records, owing to have employed prefabricated short slab and floating ballast bed plate end isolation mounting, bring the advantage of following installation, economy and mechanical characteristic aspect:

1) pure built-in steel spring floating slab will jacking from ground, often take turns jacking 10mm, jacking 3 ~ 4 bout wanted by every block plate, and prefabricated short slab can directly be placed on the present invention's floating ballast bed plate end isolation mounting, during placement, prefabricated short slab is generally within working depth, saves top lifting height and jacking bout;

2) same reason, no matter present invention saves the leveling steel plate being used as in a large number and heightening pad or height adjusting cushion plate, be floating ballast bed plate end isolation mounting, or all the other Elastic Isolators, and its leveling steel plate is not be jacking and standby, but be leveling and standby;

3) in mechanical characteristic, the floating plate of rubber pad integral face paving or strip paving can not produce See-saw effect, if but prefabricated short slab is all with dot point mode elastomeric bearings such as built-in vibration isolators, due to the reason of structure, a fastener spacing is wanted at least from floating plate end, when only there being a wheel shaft to be positioned at floating plate seam crossing, upwards moment can be produced, form See-saw effect or chain effect, the stability of floating plate is caused to decline, produce low-frequency beat to shake and noise, floating ballast bed plate end isolation mounting is placed on below plate end or the seam crossing of plate by the present invention, seesaw phenomenon can be avoided to occur, ensure vibration isolating effect and the safety of floating plate,

4) in addition from cost performance angle, train load is through prefabricated short slab, plate end and rail will produce sinking, to with same rail sinking admissible value, vibration isolator is the closer to end, required vibration isolator rigidity is less, number of springs used is minimum, most economical, therefore vibration isolator is positioned over end (below most end) most economical, and adopts shear hinge simultaneously, the rigidity of a vibration isolator at plate seam place can be made to be that two pieces of adjacent prefabricated short slabs share, rigidity is shared, and almost doubles, more economically;

The common feature that all embodiments of these features the present invention all possess, illustrates in the lump at this.In addition, be noted that especially, plate end level described in the present invention is to stopping means, wherein the implication of " level to " not refers to traditional horizontal direction, but refer in particular to the in-plane residing for two one steel rail treads of same circuit, this plane does not overlap with traditional horizontal direction under given conditions, such as, when the curved section of track, itself and traditional horizontal direction just present certain angle.In addition, in the embodiment of the present invention, only arrange two floating ballast bed plate end isolation mountings for the plate end of the prefabricated short slab of every block to be described, based on know-why of the present invention, the plate end of the prefabricated short slab of every block also can arrange more than two floating ballast bed plate end isolation mountings, such as, can set up a floating ballast bed plate end isolation mounting at the middle part of plate end longitudinal direction; Also can along the both sides of the longitudinal midship section of plate body, every side places two floating ballast bed plate end isolation mountings respectively, each floating ballast bed plate end isolation mounting carries the plate end of adjacent two pieces of prefabricated short slabs more respectively, and these are all the simple transformation of technical solution of the present invention, no longer another accompanying drawing explanation.The technical scheme of narrating in embodiments of the invention is only for understand know-why of the present invention better; be not limited to the technical scheme itself that embodiment is narrated; technology in many embodiments is decided on a verdict and can also be carried out cross-utilization; also good effect can be realized; differ at this and one to illustrate, all within the protection domain of application claims.

Claims (13)

1. a floating ballast bed plate end isolation mounting, comprise top board, base plate, flexible member and damping element, flexible member and damping element are arranged between top board and base plate, it is characterized in that top board being arranged plate end level to stopping means, plate end level comprises plate end horizontal limit devices or/and plate end longitudinal limiting device to stopping means, plate end horizontal limit devices comprises cross spacing plate, adjusting bolt and locking nut, or cross spacing plate, adjusting bolt and tune gap pad, plate end longitudinal limiting device comprises longitudinal spacing plate, adjusting bolt and locking nut, or longitudinal spacing plate, adjusting bolt and tune gap pad, or longitudinal spacing part and locking cushion block, longitudinal spacing part comprises gathering sill, locking cushion block is arranged in gathering sill.

2. floating ballast bed plate end isolation mounting according to claim 1, is characterized in that flexible member and damping element are arranged symmetrically with along the horizontal midship section of plate end isolation mounting.

3. floating ballast bed plate end isolation mounting according to claim 1, is characterized in that locking cushion block is made up of at least two son locking cushion blocks.

4. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that the flexible member in floating ballast bed plate end isolation mounting comprises helical steel springs, disc spring, rubber spring, polyurethane spring, metal rubber and plastic complex spring or air spring, damping element comprises Viscous fluid damper, orifice restriction type damper or macromolecular material solid damping element.

5. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that the damping element in floating ballast bed plate end isolation mounting is viscous shearing type damper or shearing-type macromolecular material solid damper, it is made up of damping material, plunger and damping urceolus.

6. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that arranging the vertical stopping means of spring failure in floating ballast bed plate end isolation mounting, the stroke-limit of the vertical stopping means of spring failure is less than 10mm.

7. floating ballast bed plate end isolation mounting according to claim 6, is characterized in that the damping element of the vertical stopping means of spring failure and plate end isolation mounting becomes one.

8. floating ballast bed plate end isolation mounting according to claim 1, is characterized in that, in floating ballast bed plate end isolation mounting, arranging inner horizontal to stopping means between top board and base plate.

9. floating ballast bed plate end isolation mounting according to claim 8, is characterized in that inner horizontal becomes one to the damping element of stopping means and plate end isolation mounting.

10. floating ballast bed plate end isolation mounting according to claim 1, it is characterized in that arranging linkage between floating ballast bed plate end isolation mounting and basis, linkage is specially the upper corresponding stone bolt arranged of connecting through hole and basis that floating ballast bed plate end isolation mounting base plate is arranged, or the upper corresponding alignment pin arranged of the connecting through hole that base plate is arranged and basis, or the mechanical brakeman arranged between base plate and basis, or base plate bottom surface arrange to square foundation to outstanding positioning convex.

11. floating ballast bed plate end isolation mountings according to claim 1, is characterized in that the top board surface of floating ballast bed plate end isolation mounting arranges leveling backing plate.

12. floating ballast bed plate end isolation mountings according to claim 1, characterized by further comprising cushion pad.

13. floating ballast bed plate end isolation mountings according to claim 1, characterized by further comprising and adjust gap backing plate.